MoS2 monolayers on nanocavities: Enhancement in light-matter interaction

Corey Janisch, Haomin Song, Chanjing Zhou, Zhong Lin, Ana Laura Elías, Dengxin Ji, Mauricio Terrones, Qiaoqiang Gan, Zhiwen Liu

Research output: Contribution to journalArticlepeer-review

80 Scopus citations


Two-dimensional (2D) atomic crystals and van der Waals heterostructures constitutean emerging platform for developing new functional ultra-thin electronic and optoelectronic materials for novel energy-efficient devices. However, in most thin-film optical applications, there is a long-existing trade-off between the effectiveness of light-matter interactions and the thickness of semiconductor materials, especially when the materials are scaled downtoatom thick dimensions. Consequently, enhancement strategies can introduce significant advances to these atomically thick materials and devices. Here wedemonstrate enhanced absorption and photoluminescence generation from MoS2 monolayers coupled with aplanar nanocavity. This nanocavity consistsofan alumina nanolayer spacer sandwiched between monolayer MoS2 and analuminum reflector, and can strongly enhance the light-matter interaction within the MoS2, increasing the exclusive absorptionofmonolayer MoS2 to nearly 70%at awavelengthof450 nm. The nanocavity also modifies the spontaneous emission rate, providing an additional design freedom to control the interaction between light and 2D materials.
Original languageEnglish (US)
Journal2D Materials
Issue number2
StatePublished - Apr 28 2016
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • General Materials Science
  • General Chemistry
  • Mechanical Engineering


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